Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '646df3581abc237e6a61834d214b430027b590d6f5fcaf9345a87a033a043c5d' 
  AND token = 'eZ8gQS23RV+Gl0L8nLcOgNBwGd6xgXPsaTAZ5rayFHE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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