SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae22f3297ec9f11230582f56d2a9f383541378ed9ac47757e16062b4302a2822' 
  AND token = 'y1RHqCDYDfokM7R/OGsWZYwXKFvjM2OgjBQHc0JK2Ro=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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