Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b1a85068c2568d99a626fd5bdf58217e269d7050f67c4395290a2189b187a8b5' 
  AND token = '2LqFzHYDxhm6syZNCDqA04fkMbInpv7y4HYZ3vC4LGE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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