Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '755469077db1dbf5f11d4ed46d2c9ac69298472c029784d789ae572ceb9e7475' 
  AND token = '4mtAVPOA+apK31sz/LjZg6keWq+tF3aP9MHriBdYXto=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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