SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '32715cef20741eafe857843d2d438a9ac32ac25077fe78d5fdfc0a1d5649148b' 
  AND token = '8PlKI+RsOW+QghqxbEszQfT2Iwn6vRUCrJMUc6lmAe4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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