SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'f447c3b0fab0441db2a947e19c7294663a6178f032652e74ec43bc37fad81d5e' 
  AND token = 'R3Ty1yQ2ndlL+QGq5FsYFflH+P8l8H4ZpWz9z0hRh7c=' 
  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"
    }
  }
}