Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4ba5138362295d322f54edc2b59a17ba92f3f8e2628a898684273906ac3e37f5' 
  AND token = '9NkDKIOvoXy9lZOMm1zoP80QbkseHuaje8r1vXpEyAE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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