Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3e992c08db1949f91debf77156bb97ff3ad1fc1f327acbee8f1c2cd200d295d4' 
  AND token = 'bPz3uh/J8RJo+WcBNYfP7952sFnp3g8yVF/WFKJ9sco=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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