Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b77a912c4e8ed3474d675c8a26634277bc48f079a3bf6085f429fe3333f86b6d' 
  AND token = '9qwBMwm94s5qRsbZqisZ6YX3oO0bTwVYlv8TOzJsTy8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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