Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b6b9de370d4ab42584396422792b42f5a28d10c62474502c8a6f6fdf3d0b2b00' 
  AND token = '0oJ5imDkwDJ1xnCRqQF4ReJ8Y3bI8VwC2556w9rD1gQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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