Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4819d3312072b8b68848786400b2375b151e7a2e0fce219d28b06c34b1cd4752' 
  AND token = 'YMRV/bwAKMR3szM5IzjEEB6uom1950urw5ubDVc5bJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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