SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6881ad1e55311b215f437074c9ab569a054d8028ddcfc0846245b68fe2b45a93' 
  AND token = 'SCuITP+C2/Yt0GhHofZHpFOwgZWE+Wn5s+FzKXKj8lw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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