Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c25819069b4303fd7d622fbd94793a914cbe38bdc81316843f1d0fe40a406c39' 
  AND token = 'D776pgV0SagVD1od/faTuQhSWEl4buBvFHjdhQWFxuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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