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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a2b7e6066221a26de527afe70cf0373aaa1c3ea6da187111f674e6b1d1c7fe5' 
  AND token = 'I0UmcluKAu9laEb0OgT6yjGzSbO/qveNRirlMUyOA/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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