Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5175bc33ebb277c8c7b374f88ce3c717e8a5f8a34798d3dced304a2b2186942e' 
  AND token = 'eOS8nPX3YV6Qb20uTCmdyfbBazBP/fAUJNPoPw/h5lM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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