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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfa22a58dcbda0d6e9c7a8e48f9ee533af13eefae7d16df89ec83764875194b5' 
  AND token = 'FWBNU5Z01XGEYcV/7+yrctAC03tZWviI/ZHPROYL3eg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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