SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd7a0e6616a8e631442afc2fff6d7fbca4b0ec1c487044f72b5526190264c77c5' 
  AND token = 'lXo8nTwLgrIPUqDBGx3k2rqTBl9c1l98zVVK4jiATRI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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