Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0f4ab0a5284936e2ed65764def7e216c9d778cde6a3ad4462f12c0a6ab1190a' 
  AND token = 'HuSfAlXNKA2x41JZX+27dhS6xZSf6mZovzEDa7AEW/g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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