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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '56a232e1c0f333cb4999becf5698f46ef334dcd6cbc59fce76effeea633701c0' 
  AND token = 'Y7KgG3k2mytoWy5e3TDmZyulS7d8QKhuxIzU/YjVGDQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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