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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '130fd565d453d84b9968dc9426b793b62261199d644e30017193eac054440509' 
  AND token = 'DnBjUDoepu0Tk2n2f/nRd0gjooRu8gZtrHj3W6EaInY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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