Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '386e4dfa4fc46c09c7030c62180fcef52e716b14e7b5d9048dd197064d0f50f8' 
  AND token = 'f67TLtGeO/hc+JFhRWNbZ8DODVMnk+Fw/SqbLMSA1ng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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