Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'da9403d5fa41fbf05bd36efa3a914296253432f3eacd6ea159db6d4d2e813024' 
  AND token = 'yeynhBWOxYMj9WZtpHSme6GYn5Nnhd1lWI/Ko24l59w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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