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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '705d48cea47f122b0f797cdd6c50fb94cbf23e5b2832ae62d92ea0d244f2be2e' 
  AND token = 'bEMr7nqASUPdYVi3yP8J/XIuzmwOqX9gSmWVM2a9mwE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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