Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5657e6b0ccb8f2e5f368ff614644847e3136262d9bb29c20e389b70552533220' 
  AND token = 'BAvHxvW8iMsKjJvPjgSGuAIZR6yc0isB8Dx98lipzTI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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