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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd04abf59e36abad6eccbd045241e616b9057b0a291235b21deb2bfef1b1eb0fb' 
  AND token = 'Ypy9tKW4TW/e7HuUulyRijOovZ1SKxxQ5CiYEynzAxw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}