Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3a7e043c2edb8c65c7c349ad678f3512148524b62bf5617a814a42defce74d41' 
  AND token = '1QB/s7lFwz6fNpheGD6D5rs1MYvZ2nKNXzlH4vZZ7EI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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