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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33a1e59c3a82bc9d2fc46f149abaf9caa99cfd408effbf43a660a5a71c93a3b6' 
  AND token = 'dMj6232OZKIas0rOlsAx5k4rlmNA8HXjsKRd7X/JN2I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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