Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5768b4faddd98bc072bdf0de4aadcebcd5c34972a7b2202bde8bae59bc5c274b' 
  AND token = 'NTilidOLEHE2qSXpNIziHdpIYhIHjWSOOPEmhezuQFg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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