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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd25825c081a1d7272d6571cb8e28e59f63a1cb0b6131d6d9d75da7f3166feb6e' 
  AND token = 'VbG77W8EOPV/Nkz0w2h0pKwfK51vQWcNTUt3g7e9QM8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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