INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '51547d5eb1a9d07cf3d899a076e761bd9d1b73d7edcf0af9050cefc9087bdd3f', 
    'Q3p+LphGo71e47WwFz5do5Ic8X7WTcsXYejpK84FPWc=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00082

Result

int(1)