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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '360992784686b5938e2c94e449ab7c774afc5b517e3587fafb488c7505e5fd86' 
  AND token = 'yL6bmq1UD9NvqAG7NcaseHxIxAgU0W7n0yrDygOI7rY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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