Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eff38d5691946246adec0ad682c1c62073e20e033ff05fc274eba9fb79c12367' 
  AND token = 'D3Ay617HAwZW7bjbMBetrWb+oqEbTqr/F88V+R9m8t4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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