Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bdae3cefcca09afdc66d12f6ea74370fb60945e6f0de92af942332ef344aff23' 
  AND token = 'xTRguZFjSdg+ceElteqR3Cmi2Gi7ie0zeVPoBLVEryQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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