Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10e152cdb753ba40d986283d421ecaffb8b813a9262675bc660badc80b7f2b23' 
  AND token = 'O+NrSyx7Fu3pwG/PQX9XDCf1kBDKclx30bvzNxatr/I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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