SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'acc44ec8817a21eaeca6af6db771ec4ffcd49475ddc1d6fe6b51c37410284dcd' 
  AND token = 'T5PxcydWDeG3Sxta5KMRz/wn7j8OJQtW05lP/dVRy0k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00075

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE Impossible WHERE noticed after reading const tables