Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '295fd4756813a26bcdb088d0f75a2577c498b393151d2742edfad338edfc56c8' 
  AND token = 'AC4u1Qu8aLwP6qn1LDFyfCDbI6W14hSR3Xyp5wX0Qw8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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