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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9260c2f28eddda4877cf98966af4bfeae64f3b5e6731afd8448c675c977d3886' 
  AND token = 'Cgp3Pcz0DYO0P9h926k2ILRbM5uf01rOGcwQcLBhElI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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