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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '86dff47ff6c09c76916c591c677ba36568c236609a953f1238cd0eea0f1fb5d8' 
  AND token = 'H3NEOH3aVL6mqaaO84jhZygLx0iXJMWWmJ4FQBd1n7w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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