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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd53e96b6e893cd968474779c934f2d5e4c356131c49e0abdac30038e9c07a936' 
  AND token = 'MWIBUcX0zutxnUF+/u0ozZbb37ceVY1+C6PoXvoKcR0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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