Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8c82b2100cfa87ea59eccfcfa0d69f5912e5b4374ec739ecdd23caf7c6ca6f30' 
  AND token = '0NmzC5o02MA2Jrc/zITuEr/Xe6DekNvps0qwC8f5NMU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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