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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61cedbf580886037f32511508f360bf94f58261acf6a78eb51ecd89b68562e71' 
  AND token = 'meX5v9Y6WoiPsIeGys3YJ4BTW4XW71pzm3QKHen36zg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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