Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7105bebb44b8035acada7f3238f67979d02070592891086396cb8e4aec40acd7' 
  AND token = 'rQEWO5vx7PPJyS6j4VvWahTCRrFuTO1clKVM7+Hz7Sk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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