Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '7e5b2ab7ca1f9ff6e16c2839f88910c99d6fff229ea05acea4606daaec04be33' 
  AND token = 'J2hsnstdI94Y0Xfn8Ejlr3tOzbPOn/aHF+o6xGDHEO0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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