Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a62bc8c02b2c2560c2dc9e8cc5e01ec8356396e6756b95760a10e8e77b86dbb' 
  AND token = 'SN/2hCGBEd4P7Rg1cHnJm1z/QQuHLMwCfX+1652PziE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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