Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f56af8e8615b25ba8a61d711b4f148ffc6cfb885c5bf2560bf4977ebb0d89de0' 
  AND token = 'DtdqwyBOf1Mc0xhqmPzDBhPM5g/hLBOoPE+dsXWq2r8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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