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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b5ab92917328e5ada68c4260dd76726ef73b77af0b5356765bfa597ac53d574f' 
  AND token = 'UXnyJ3VRleghVAomzF10G8r6zm7y1K0eudteG8MhY+E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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