SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '72f302f4873cd19a63398c7774e42271bf191044577fd741599423816fb037d5' 
  AND token = 'MBcaqdBx03aZXbU+uT+At6qDSqAjxX3GqfTAk+AaKhw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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