Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7916629e720c7dab989b57b94f36255043083dcce071de24fc0aea2e32738763' 
  AND token = 'mn/m1wF0qTmkPg5SG0Ry65Wh3Lx2nH/jrmEaif552qw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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