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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60bde37b45914158d93d81c56327116b3383bab3d890c74a6f4df6ee195f66c3' 
  AND token = 'zO5fG6lk2y2CKF6kcMXrqnJBx+e9f5VzBKW5gPR38GQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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