SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d699f4e53755e8b97ec276df6a46a6e63686473617ab1bc78f9fb85453429b4' 
  AND token = 'tBRroLUZSQCAOgaKZ3AoHO6vUS1V7O6E13rN/62w6YE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

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