Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73380e7bfef639b096a82e5fd0004971005e4da98a60246254de361c14a57fea' 
  AND token = 'IT4dP72ozvy8f99Lap+U0uESGOycl2L50G28U1lSUCQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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