Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '223c295bf055a4273555af3c5794620175068db748262d5dc27419e965714696' 
  AND token = '1wRKiyVVhfUKKwtRCJ7HjjZOKyRhy4jJLbWGUyEy34Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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