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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '63f2fd24f90fa7952bd58d84f23ab1ddc13b60e7e9689866922eecc29e141d2b' 
  AND token = 'ut10Ovq9RY854vsznrJ+zvlV9+pZlGtU79MEzYlz7C0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}