Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f9964d3407c81ae28b167f15f42676e005a014eaf79b2cd99202289dafb3515' 
  AND token = 'UJAVRGIyStZLiaFP0e5tvUSZbFQgHUsyZFG4TsQNKEE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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