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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb7dc57edf9adbbd6397a91da5618c83542e3d898ba11c7b5043a7a6d9b61fab' 
  AND token = 'w+xo5ofC4Lv2EJuDVapfmvs2oWFIogwfXIuO47t1DWM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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