Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '85ef82199105752e06e90f3cd515e8e211959c30f547a7c55b7a83cec78ec05d' 
  AND token = '4SO773pf3ijhwd4KJTK2SlPWzANiXT3IdpTJ0Qcd/SQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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