SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '04de3550135c0d703e7bd9c32fcf5210aad56a62c1ec5fcc2ddf7f6834aaf922' 
  AND token = 'tpBxzC8Pkrn2mHXOUSfmlRVzxSh73G1s9fQkw4JJyRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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