SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3eab0a98467c65fc8af4213bcd4626d6ef88f6e44c18b57ac108794cec44e097' 
  AND token = 'Q8kxAi1VxtClVhZRdLSDGh+C4MNjmxvuzX6SqbzisuY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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