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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '658d0fd8b06536747614db4d17d4805d0092dcff9582ba8c93ebd3116b00cc23' 
  AND token = 'rPwc2Z8XZb80NJfnR09My4g+je11tp+UTONatT9gJ7w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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