Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '056df211987c4f883f30ec8f487b3493ea0dfdde6fcd5c6e4912fda1fac5d9ea' 
  AND token = 'M2in5txvKmLNRHSdB3duBwROw+ee1C2Fesi6CzewhNY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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