Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3cbe649deaf273e2baa27d95b0389d22781e52ffc5d06ffbf6bdf8785942006' 
  AND token = 'pf43phAGQDBCfOQiHb+cpli+RHL/nT8ve6VnHdTQ+bQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}