Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '064207c197cdc42b42a0c11df85180289d9809e89feb9c88f9e751c3e6a8c220' 
  AND token = 'M1pea0uYXifrXlykMb8mehkpM82Lq/TaOxC1Z3yhw5o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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